Housing for electric heater



FIG. 1 is a top perspective view of a housing for an electric heater showing our new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a front elevation view thereof; and,

FIG. 4 is a side elevation view thereof, the opposite side being a mirror image thereof.

The bottom and rear of the design form no part thereof. The subject matter shown in broken lines is for illustrative purposes only and also forms no part of the claimed design. 

The ornamental design for a housing for electric heater, as shown and described. 